Anthoinite Mineral Data

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General Anthoinite Information

Chemical Formula:

AlWO3(OH)3

Composition:

Molecular Weight = 309.85 gm

Aluminum 8.71 % Al 16.45 % Al₂O₃

Hydrogen 0.98 % H 8.72 % H₂O

Tungsten 59.33 % W 74.83 % WO₃

Oxygen 30.98 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

AlWO₃(OH)₃

Environment:

In placers and probable alteration product of scheelite.

IMA Status:

Valid Species (Pre-IMA) 1947

Locality:

Mt. Misobo tungsten mine, Kalima district, Maniema, Zaire. Link to MinDat.org Location Data.

Name Origin:

Named for Raymond Anthoine (1888-1971), Belgian mining engineer, who wrote on prospecting of alluvial deposits.

Name Pronunciation:

Anthoinite + Pronunciation

Anthoinite Image

Images:

Anthoinite Cerotungstite-(Ce) Ferberite

Comments: Yellow cerotungstite-(Ce), with black ferberite veins and whitish anthoinite.
Location: Bugarama, Rwanda. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Images:

Anthoinite Mpororoite

Comments: White chalky massive mpororoite with brown anthoinite.
Location: Kara Mine, Tasmania, Australia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Anthoinite Crystallography

Axial Ratios:

a:b:c =0.8107:1:0.7271

Cell Dimensions:

a = 9.21, b = 11.36, c = 8.26, Z = 8; alpha = 94.75°, beta = 90°, gamma = 92.58° V = 860.37 Den(Calc)= 4.78

Crystal System:

TriclinicSpace Group: P1 or P1

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.052(1), 3.07(1), 4.195(1),

Physical Properties of Anthoinite

Cleavage:

{???} Perfect

Color:

White.

Density:

4.8

Habit:

Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite).

Hardness:

1 - Talc

Luster:

Earthy (Dull)

Streak:

white

Optical Properties of Anthoinite

Gladstone-Dale:

CI meas= 0.114 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.11 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1705,KPDmeas= 0.1698,KC= 0.1917
Ncalc = 1.92

Optical Data:

Biaxial (?), b=1.81-1.82

Calculated Properties of Anthoinite

Electron Density:

Bulk Density (Electron Density)=4.26 gm/cc
note: Specific Gravity of Anthoinite =4.78 gm/cc.

Fermion Index:

Fermion Index = 0.08
Boson Index = 0.92

Photoelectric:

PE_Anthoinite= 719.06 barns/electron
U=PE_Anthoinite x rElectron Density=3,061.61 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Anthoinite is Not Radioactive

Anthoinite Classification

Dana Class:

48.03.03.01 (48)Anhydrous Molybdates and Tungstates

(48.03)(Basic Anhydrous)

(48.03.03)Dana Group

48.03.03.01 Anthoinite AlWO3(OH)3 P1 or P1 Tri

Strunz Class:

07.GB.35 07 - SULFATES (SELENATES, TELLURATES)

07.G - Molybdates, Wolframates and Niobates

07.GB -With additional anions and/or H2O

07.GB.35 Anthoinite AlWO3(OH)3 P1 or P1 Tri

07.GB.35 Mpororoite Al(WO3)(OH)3•2(H2O) P1 or P1 Tri

Other Anthoinite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Anthoinite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Ask about Anthoinite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Anthoinite Specimen Label here :

Anthoinite

AlWO3(OH)3
Dana No: 48.03.03.01 Strunz No: 07.GB.35
Locality:

Notes: